145402623264452 has 12 divisors (see below), whose sum is σ = 255925426498476. Its totient is φ = 72281072836320.

The previous prime is 145402623264439. The next prime is 145402623264487. The reversal of 145402623264452 is 254462326204541.

It can be written as a sum of positive squares in 2 ways, for example, as 57779244802756 + 87623378461696 = 7601266^2 + 9360736^2 .

It is a super-2 number, since 2×145402623264452² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145402623264452.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105059698199 + ... + 105059699582.

It is an arithmetic number, because the mean of its divisors is an integer number (21327118874873).

Almost surely, 2^{145402623264452} is an apocalyptic number.

It is an amenable number.

145402623264452 is a deficient number, since it is larger than the sum of its proper divisors (110522803234024).

145402623264452 is a wasteful number, since it uses less digits than its factorization.

145402623264452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210119397958 (or 210119397956 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 50.

Adding to 145402623264452 its reverse (254462326204541), we get a palindrome (399864949468993).

The spelling of 145402623264452 in words is "one hundred forty-five trillion, four hundred two billion, six hundred twenty-three million, two hundred sixty-four thousand, four hundred fifty-two".